Blower for boilers.



E. B..BARNH1"LL. BLOWER FOR BOILERS. APPLIGATION FILED SEPT. 1, 1909.

966,987. I Patented Aug. 9,1910. 'y

'Mg/U Q Uiff@- iran sTATnsPATENr OFFICE# nnwnnn n. IsaaNHILI., orMAaIoN, INDIANA, AssIGNon 'ro ERNEST w. MICKLIN, or

- nnrnorr, MICHIGAN.

BLOWER FOR BOITIERS.

Specification of Letters Patent.

Application filed September 1, 1969. Serial No. 515,685.

To all whom fit may concern:

Be it -known that I, EDWARD B. BARNHILL, a citizen of the United Statesof America, residing at Marion, in the county of Grant and State ofIndiana, have invented certain new and useful Improvements in Blowersfor Boilers, of which the following is a specification, reference beinghad therein to the accompa' ying drawings. l

In blowers for water-tube boilers wherein a jet of steam is 'directedbetween the tiers of tubes, it is necessary that some provision be madefor directing the jet back'and forth along the tubes-in order that aswide an area as possible be cleaned-by each nozzle.

This invention relates to a blower for water tube boilers whereinanfarrangement i of the partsenabl'es the operator to direct a jet backand forth .between tiers ofwwater tubes, and also to a constructionwhich imarts a most effective shape to the jet wheref' pipe may beboiler equipped with a blower embodying.

feature of the invention, the outer casing of one of the lower nozzlesbeing lndlcated in longltudlnal section; Fig. 2 1s a view 1n lon- Igitudinal lection showing the construction of one of t 1e blowernozzles; 'and Figs. 3, 4, and 5 are views'in detail showing thearrangement of a tip and-closure.

Referring to the drawingsnl indicates aV side wall ofl a Vboiler havingwater tubes 2 arranged in planes in staggered relation. A tubular casing3 is embedded in the wall l parallel to and between the planes of theadjacent .tiers oftubes. A cylindrical nozzle d designed to withstandthe heat of the boiler is secured to the inner end of the casing flushwith the inner face of the wall-. A tubularV tip 5 having a roundedouter end with diametrical slot 6, is lonritudinally reciprocablerin thenozzle 4; and casing 3, projections 7 engaging key ways inthe noz zle 4or other like means being provided to4 prevent its rotation, and acollar 8 or other suitable top being adapted to seat itself against a.Aannular shoulder 9 or the like in the nozzle 4 and thereby 'define theoutward casing 3 is closed by a stuin movement ofthe tip. Acylindricalplug 10 whose rounded end'conforms to the innerface of theslotted end of the tip 5 is rotatably secured'in the tip. A strap 11 orlike means removably secures the plug in place. A transverse opening 12throughthe inner end of the plug' is in communication with an axialaperture 13 which terminates in a port 111 on the outer end of the plugin register with the tip slot 6. The port 14 extends obliquely or in acurved line across the end `of the plug so that rotation of the lattermoves the opening through the tip caused by the registration of the slot6 with the port, from side to side ofthe tip. The

plug'is rotated by a stem whose inner sectionrv 0 15 that is secureddirectly to the plug, is in non-rotatable telescopic engagement with thesleeve 16 on the inner end of the outerv section 17 ofthe stem, a spring18 encirfA cling the inner section Vin compression vbetween the innerAend ofthe sleeve, and stop pins 19 on the section, holding the latternormally retracted; The cuter end of the through which the outer sectionor the stem extends. A hand wheel 21V enables the operator to rotate thestem.

As herein indicated as a preferable ar rangement of the Orts for use ona large boiler, a set of casings is provided for each tier oftubes, withtees 22 on the outer end of the casing connected ,and joined to a steampipe 23. Bock arms 24: on the eX- tremities of the stems are 4coupled bya link 25 so that the lblowers may be manipulated simultaneously.V Y yIn operation, the tip is normally held in retracted position by the'spring of the tele'- scoping stems. When steam is introduced into thecasing, the pressure projects'the plug and tip toward the adjacentboiler plugin a-plane parallel to', .and etwe'en the tiers. By turningvthe lu'g the operator di- Arects the jet back and orth along the tubesbox 20 tubes. Theslot of the tip is arranged par thereby reachingvremote portions of the tubes without diiiiculty. By arranging theblowers in sets the boiler may be cleaned eX peditiously without dangertothe operator.

By forming the tip slot'with parallel slides a fan shaped jet isobtained which is not img lseater peded by the tubes nearest the nozzleand thereby reaches the tubes at the center of the boiler effectively. l

Obviously, changes in the details of construction may be made withoutdeparting from the spirit of the invention,l and I do not limit myselfto any particular iorm or arrangement of parts.

What I claim as my invention is 1. In `a blower for a boiler, a. nozzle,a hollow tip therein having a rounded end .wall with transversedischarge slot therethrough, and a plug rotatable in "the tip having aport in its end face that is adapted to ,cross the slot at substantiallyright an- 1 reciprocable in the'nozzle, provided with a gated port onits inner end that crosses the transverse slot in its dischargeend, aplug rotatably secured in the ytip having a passage therethroughterminating in an elonslot at substantially right angles in any posltionof the plug, and means for rotating the plug in the up aaapted to holdthe up' retracted in the nozzle when not under steam pressure. v

4. In a blower for a boiler a casing adapted to be connected to a sourceof steam supL ply at one end and provided with a nozzle at the other, acylindrical tip non-rotatably reciprocable in thev nozzle provided witha transverse slot in its discharge end, a plug rotatably secured in thetip having a assage therethrough terminating in an e ong'ated port onits inner end that crosses the slot' at substantially right angles inany p0- sition ofthe plug, a .stem extending outside the casing having,telescoping sections one of which is secured to the plug, and a springadapted to hold the stem contracted when the casing is not under steampressure.v

5. The combination of the Water tubes and wall of a boiler with a blowerconsisting of a series of cylindrical casings each arranged in the walltransversely to the tubes, a cylindrical nozzle at the inner end of eachcasing, a non-rotatable tip reciprocable in each nozzle provided with atransverse discharge slot in a plane parallel to the plane of theadjacent tubes, a plug rotatable in the nozzle adapted when turnedto'deflect a jet vthrough the slot, a stem for turning the plugextending through the outer end of the casing, adapted to hold the stipretracted in the nozzle when the casing isnot under steam pressure, andmeans for simultaneously turning the stems in the several casings.

In testimony whereof I ailix my vsignature in presence of two witnesses.

EDWARD B. BRNHILL.

; Witnesses:

S. C. ARBUCKLEV H. W. RAY.

